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Lunar mascons as consequences of giant impacts (1974)

Arkani-Hamed, J.

In: Other Sources

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Publication Date: 2019-06-27

Description: An investigation is conducted regarding the effect of a giant impact on the thermal evolution of the moon. A model is proposed for the formation of the lunar mascons. The model takes into account the evidence of late volcanism during a period from about 3.7 to about 3.2 b.y. ago. It is found that a giant impact produces extensive fracturing in the region surrounding the basin and reduces the average thermal conductivity of the upper 20 km of this region by a factor of about 2. The less conductive ejecta blanket and the fractured zone behave as a thermal insulator. The lithosphere beneath the basin thickens monotonically and it becomes strong enough to support the mascon.

Keywords: LUNAR AND PLANETARY EXPLORATION

Type: The Moon; 10; July-Aug

Format: text

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